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Apr 13, 2017 at 12:58 history edited CommunityBot
replaced http://mathoverflow.net/ with https://mathoverflow.net/
Sep 27, 2012 at 9:25 answer added Mathieu Galtier timeline score: 4
Feb 4, 2010 at 19:25 history edited Mitch CC BY-SA 2.5
Very minor mods to improve clarity.
Feb 4, 2010 at 10:39 answer added Magnus Lie Hetland timeline score: 2
Feb 3, 2010 at 23:33 comment added Mitch Sorry. Yes, sums of columns = 1 also.
Feb 3, 2010 at 22:33 comment added Darsh Ranjan Why is A doubly stochastic? If that's an additional constraint you're imposing, be clear about that. But as-is, you seem to allow one particular point j to be recognized 100% of the time, in which case column j has all 1s and everything else is 0.
Feb 3, 2010 at 21:19 history asked Mitch CC BY-SA 2.5